NEW MINERAIv FERTILFZER. II 



It was plowed and kept in clean culture and seeded to oats in 

 1910 without the addition of any fertilizer whatever. The 

 object was to test the uniformity of the soil and see if it was 

 adapted to a soil test experiment. The yield of oats was about 

 30 bushels per acre. The part of the field selected for the ex- 

 periment was divided into six plots, 62 1-2 feet long and 34.8 

 feet wide, each plot containing 2175 square feet. The field all 

 had a gentle slope towards the west. The soil was as uniform 

 as it was practicable to select. Commencing from the south 

 the plots were numbered, A, B, C, D, E, and F. Corn was 

 grown on Plots A, B, and C, and potatoes on Plots D, E, and F. 

 Plot A. was fertilized with one-fourth cord of manure and 25 

 pounds of 4-8-7 fertilizer. Plot B was fertilized with 45 pounds 

 of Mineral Fertilizer. Plot C was a check without fertilizer. 

 Plot D had 90 pounds of a 4-8-7 fertilizer, 60 pounds of which 

 was applied at planting and 30 pounds later. Plot E had 43 

 pounds Mineral Fertilizer, Plot F was a check without fertil- 

 izer. The plots were manured and planted on May 30. The 

 corn was about 18 inches in a row and the rows 36 inches apart, 

 12 rows in each plot, and five kernels to the hill. The pota- 

 toes were 12 inches in the row, rows 32 inches apart, with 13 

 rows to the plot. The corn was cultivated and hoed seven 

 times between June 17 and July 11. The potatoes were cultivat- 

 ed six times between June 16 and July 11 and were sprayed five 

 times between June 30 and August 17. 



June 9 the potatoes were coming about equally on all the 

 plots, and the corn was coming slowly. The corn appeared on 

 Plots B and C a day or two earlier than on A. June 15 Plots 

 B and C had slightly better growth and stand than Plot A. 

 July 3 flowering was beginning on all the potato plots. A had 

 a good growth, B and C noticeably less than A, but were about 

 equal. D had a good growth, E and F less than D and about 

 alike. July 13 xA. had an excellent growth, B and C were alike 

 but less than A by an estimate of 60 per cent. D had excellent 

 growth, E and F similar to the conditions of B and C. July 26 

 to July 31 A tasselled out and on August 3 and 4 silked. On 

 August 3 and 4 B and C were beginning to show tassel spikes. 

 August 14 B was tasselled out and on August 17 the pollen was 

 ripened. 



